On May 18, the US Environmental Protection Agency (EPA) announced the online availability of all eighteen months of data collected under the Information Collection Rule, "a national research project to support development of national drinking water standards which protect public health." Users can access the data via the ICR Query button on the left-hand side of the page. Data tables on national levels of Microbials and Disinfection Byproducts are available as are state data, accessible via a clickable map. A User's Guide and background information on the project and data collection are also provided.